The purpose of this study was to assess the efficacy of a fixed dose combination (FDC) of glecaprevir/pibrentasvir (G/P) given for 4 weeks for treatment of acute hepatitis C (HCV), with or without HIV-1 coinfection.

The study was conducted in two steps. In Step 1, participants received four weeks of treatment with G/P for acute HCV infection and were then followed 24 weeks post treatment. Participants with HCV recurrence (reinfection, suspected relapse or undefined post-treatment viremia) or HCV virologic failure before or at the Step 1 Week 16 entered Step 2 and were offered HCV re-treatment. The remaining participants were followed in Step 1 for a total of 28 weeks. The study primary and secondary outcome measures pertain to Step 1.

In Step 2, participants were re-treated for up to 16 weeks (G/P or alternate regimen through standard of care), and were followed for 24 weeks post treatment. This post-treatment follow-up included a visit for the determination of HCV sustained virologic response (SVR12) after re-treatment. All summaries of data captured from Step 2 are pooled across HCV re-treatment regimens, as specified in the Statistical Analysis Plan.

In Step 1, study visits were scheduled at study entry, weeks 1 and 2 (on-treatment), week 4 (treatment discontinuation), and weeks 8, 12, 16 and 28 (post-treatment follow-up). In Step 2, participants had study visits during the re-treatment period, where the number of visits depended on the re-treatment regimen, and at weeks 12 and 24 post treatment. Study visits included physical examinations, clinical assessments, blood and urine collection, questionnaires, and HCV re-infection prevention counseling.

Inclusion Criteria

• Acute HCV infection (or reinfection) within 24 weeks prior to entry
• Detectable HCV RNA at the screening visit

Exclusion Criteria

• Any HCV treatment during the current acute HCV infection episode
• Known preexisting cirrhosis
• Acute HIV-1 infection
• Presence of active or acute AIDS-defining opportunistic infections, active serious infection (other than HIV-1 or HCV), active hepatitis B virus (HBV) or active hepatitis A virus (HAV)
• Chronic use of systemically administered immunosuppressive agents
• History of solid organ transplantation
• History of conditions that could interfere with the absorption of the study drug
• Concurrent use of prohibited medications
• Known hypersensitivity to glecaprevir or pibrentasvir, the metabolites, or parts of the formulation
• Females who are pregnant or breastfeeding
• Males with pregnant female partner

Individual participant data that underlie results in the publication, after deidentification.

Beginning 3 months following publication and throughout period of funding of the ACTG Network by NIH.

• With whom?

  • Researchers who provide a methodologically sound proposal for use of the data that is approved by the AIDS Clinical Trials Group.

• For what types of analyses?

  • To achieve aims in the proposal approved by the AIDS Clinical Trials Group.

• By what mechanism will data be made available?

  • Researchers may submit a request for access to data using the AIDS Clinical Trials Group "Data Request" form at: https://actgnetwork.org/about-actg/templates-and-forms. Researchers of approved proposals will need to sign an ACTG Data Use Agreement before receiving the data.